Although I didn't meet Wimonpak all contact with her was quick, clear and easy before arrival and she responded very quickly to any questions I had whilst at the apartment.
I was given room 6 rather than 7 which I booked but the rooms are virtually identical. The housekeeper who checked me in speaks little to no English but is very friendly and helpful with the facilities.
Everything in the room was spotlessly clean as were the hallways and stairwell. The wifi worked well for general internet use and was able to do some streaming outside of peak hours.
The mezzanine level obviously has a very low ceiling but I got away without bumping my head (I'm 6'4) just try not to forget it's there in the morning. The bed level windows on two walls make so a nice breeze to sleep by too.
The balcony is a great and very rare feature for Bangkok but would be nice to have a small table and chairs to use on it (room 7 has this but 6 does not).
It's very easy to find the Soi from the Skytrain station and it's impossible to miss the apartment building when you first arrive. Wimonpak's instructions are very easy to understand.
The Soi is a little dark and the entrance to it is a trash collection point so by the evening quite a lot of it accumulates. Cars and motorbikes will be using the soi at all hours and the soundproofing to the outdoors is not great so you may want some ear plugs. I found myself getting woken up a couple of times each time by engines revving and what not.
The local area before getting to Saphan Taksin is generally quiet and peaceful and makes for a nice area to walk around. The riverside area between Saphan Taksin and Chinatown is known for great food so there's always something to try. When leaving the soi if you turn left there is a large 7/11 within a few minutes and in the evening about a dozen food stalls serving great cheap food.
Would use again.